java app crash when calling init(Mat image, Rect boundingBox) method of video module Tracker.java. #19915
Description
System information (version)
- OpenCV => 4.5.2
- Operating System / Platform => Windows 64 Bit:
- Compiler => Visual Studio 2017
Detailed description
java app crash when calling init(Mat image, Rect boundingBox) method of video module Tracker.java.
The following code is generated by gen_java.py.
java_bindings_generator\gen\cpp\video.inl.hpp
//
// void cv::Tracker::init(Mat image, Rect boundingBox)
//
JNIEXPORT void JNICALL Java_org_opencv_video_Tracker_init_10 (JNIEnv*, jclass, jlong, jlong, jint, jint, jint, jint);
JNIEXPORT void JNICALL Java_org_opencv_video_Tracker_init_10
(JNIEnv* env, jclass , jlong self, jlong image_nativeObj, jint boundingBox_x, jint boundingBox_y, jint boundingBox_width, jint boundingBox_height)
{
static const char method_name[] = "video::init_10()";
try {
LOGD("%s", method_name);
cv::Tracker* me = (cv::Tracker*) self; //TODO: check for NULL
Mat& image = *((Mat*)image_nativeObj);
Rect boundingBox(boundingBox_x, boundingBox_y, boundingBox_width, boundingBox_height);
me->init( image, boundingBox );
} catch(const std::exception &e) {
throwJavaException(env, &e, method_name);
} catch (...) {
throwJavaException(env, 0, method_name);
}
}
When I change the code generated by gen_java.py to the following, it works fine. cv::Tracker* -> Ptr<cv::Tracker>*
//
// void cv::Tracker::init(Mat image, Rect boundingBox)
//
JNIEXPORT void JNICALL Java_org_opencv_video_Tracker_init_10 (JNIEnv*, jclass, jlong, jlong, jint, jint, jint, jint);
JNIEXPORT void JNICALL Java_org_opencv_video_Tracker_init_10
(JNIEnv* env, jclass , jlong self, jlong image_nativeObj, jint boundingBox_x, jint boundingBox_y, jint boundingBox_width, jint boundingBox_height)
{
static const char method_name[] = "video::init_10()";
try {
LOGD("%s", method_name);
Ptr<cv::Tracker>* me = (Ptr<cv::Tracker>*) self; //TODO: check for NULL
Mat& image = *((Mat*)image_nativeObj);
Rect boundingBox(boundingBox_x, boundingBox_y, boundingBox_width, boundingBox_height);
(*me)->init( image, boundingBox );
} catch(const std::exception &e) {
throwJavaException(env, &e, method_name);
} catch (...) {
throwJavaException(env, 0, method_name);
}
}
Steps to reproduce
Tracker tracker = TrackerMIL.create();
tracker.init( mat, rect);
Issue submission checklist
- I report the issue, it's not a question
- I checked the problem with documentation, FAQ, open issues,
forum.opencv.org, Stack Overflow, etc and have not found solution - I updated to latest OpenCV version and the issue is still there
- There is reproducer code and related data files: videos, images, onnx, etc